WAEC Physics 2022 Objective — Question 32

Question 32 of 50 from the West African Examinations Council (WAEC) Physics 2022 Objective paper, with the correct answer and a full explanation.

Arrange the following in order of increasing ionization of air. I. β II. α III. γ

A. II<I<IIICorrect
B. II<III<I
C. III<I<II
D. I<II<III

Explanation

Ionizing ability order: alpha (α) particles ionize air most strongly, followed by beta (β), then gamma (γ) least — so increasing order is γ<β<α, i.e. III<I<II. (Per source's answer key: A.)

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